Ricinus communis (Castor) seed oil

Ricinus communis (Castor) seed oil 1
Ricinus communis (Castor) seed oil 2
Ricinus communis (Castor) seed oil 3
Ricinus communis (Castor) seed oil 4
AKA: Castor bean, Castor Seed Oil
Plant-Derived
Fragrance
Skin Conditioner
Plant Oil
Not Clean
Ricinus Communis (Castor) Seed Oil is a cosmetic ingredient used as masking, perfuming, skin conditioning. Rated moderate hazard by EWG. Assessed as safe by the CIR.
Family
Euphorbiaceae (Spurge family)
Plant Part
Seed
Lifeform
Shrub or tree
Climate
Seasonally dry tropical
CAS #
8001-79-4
Form
Oil
Functions
Masking
Perfuming
Added for scent. Can be natural or synthetic. Common irritant and allergen — one of the top reasons people react to products.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Anti-Inflammatory
Moisturizing
Strengthens Barrier
Softens and smooths skin
Provides scent
Traditional Use
Used in traditional Indian, African, and Middle Eastern medicine for thousands of years as a skin and hair conditioning oil. Widely documented in ancient Egyptian cosmetics and Egyptian medical papyri for moisturizing and healing properties.
EWG
3
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
ewg-3
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
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Verified Jun 2026
Data: Kew POWO · CosIng · EWG · CIR